I can't tell by looking, Clarence, but will the clay bisque fire white? Looks as if it might.
I think I'd leave it bisque, but then if it were planted it would dry out more quickly because bisque without glaze is more porous. It's going to be beautiful either way. Do you make your own glazes? Something in verdigris would be pretty, with maybe a little copper oxide thrown in, if you decide to glaze it.
Beautiful!